Annville, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.4 °C (low) to 19 °C (high). Annual precipitation averages 1317.3 Millimeters. Annville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 6.4 °C | 104.14 mm |
| February | -3.3 °C | 8.4 °C | 100.84 mm |
| March | 0.3 °C | 13.7 °C | 122.94 mm |
| April | 5.4 °C | 19.7 °C | 117.35 mm |
| May | 11.1 °C | 23.9 °C | 125.73 mm |
| June | 15.5 °C | 27.8 °C | 127.76 mm |
| July | 17.8 °C | 29.6 °C | 134.37 mm |
| August | 16.9 °C | 29 °C | 98.55 mm |
| September | 13.1 °C | 26.3 °C | 89.92 mm |
| October | 6.2 °C | 20.4 °C | 83.57 mm |
| November | 0.4 °C | 13.9 °C | 86.11 mm |
| December | -2.3 °C | 8.4 °C | 125.98 mm |
| Annual | 6.4 °C | 19 °C | 1317.26 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |